Danielle E. "Utah" Bremner and Jim Clay "Ether" Harper VI are American graffiti vandals, called the "Bonnie and Clyde of the graffiti world". They have tagged trains and buildings in over 30 countries on five continents, and have made books and videos about their exploits. They have also been arrested, fined, and served multiple prison sentences for vandalism. Their use of social media has been used as an example in a book about graffiti artists, and they have been the subjects of a video exhibit and a song.